package cn.gdcp.time_broadcast;

import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity implements IOnTimeChangeListener{
    private TextView txtTime;
    private TimeReceiver receiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        receiver=new TimeReceiver(MainActivity.this);
        IntentFilter filter=new IntentFilter();
        filter.addAction(Intent.ACTION_TIME_CHANGED);
        filter.addAction(Intent.ACTION_TIME_TICK);
        filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
        registerReceiver(receiver,filter);

        txtTime=findViewById(R.id.txt_time);

        updateTime();
    }

    public void updateTime() {
        Calendar calendar=Calendar.getInstance();
        int hour=calendar.get(Calendar.HOUR);
        int min=calendar.get(Calendar.MINUTE);

        StringBuffer buffer=new StringBuffer();
        if(hour<10){
            buffer.append("0");
        }
        buffer.append(hour);
        buffer.append(":");
        if(min<10){
            buffer.append("0");
        }
        buffer.append(min);

        txtTime.setText(buffer);
    }
}